Under these conditions the switchgear equipment is performing a protective function.
在此情况时，开关装置执行的是保护功能。
A second major protective function of the skin is the prevention of invasive bacterial infection.
皮肤的第二个主要保护功能是防止侵袭性细菌感染。
A second major protective function of the skin is the prevention of invasive bacterial infection.
皮肤的第二个主要保护功能是防止侵袭性细菌感染。
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